Self-adhesive printer label Brady M21-375-430, transparent polyester, 9.53 mm × 6.4 m

Brady M21-375-430 is a transparent self-adhesive printer label made from durable polyester film with a printable clear surface. The roll supplies labels with a sheet width of 9.53 mm and a total length of 6.4 m, designed for use with thermal transfer or compatible Brady printers. The label material and permanent acrylic adhesive provide long-lasting identification that resists moisture, chemical exposure and temperature extremes including autoclave, freezer and liquid nitrogen conditions.

Advantages

The polyester construction and clear printing surface produce sharp, readable thermal transfer prints while maintaining transparency for underlying markings or color coding. The permanent acrylic adhesive offers strong initial tack and long-term adhesion on cables, panels and assets, and is formulated to remain bonded in autoclave, freezer and liquid nitrogen environments. The narrow 9.53 mm width enables neat cable and wire marking, while the 6.4 m roll length reduces the need for frequent media changes.

Suitable for

• Cable and wire identification in industrial and laboratory settings
• Panel and equipment labeling where transparent labels are required
• Asset marking that must withstand temperature cycling and chemical exposure
• Environments requiring labels compatible with thermal transfer printing

Key specifications

• Material: transparent polyester film
• Printable surface: clear, thermal transfer compatible
• Adhesive: permanent acrylic adhesive with high temperature and cryogenic resistance
• Label width: 9.53 mm
• Roll length: 6.4 m
• Resilience: resistant to moisture, chemicals and temperature extremes including autoclave and liquid nitrogen exposure

How to use

Load the roll into a compatible thermal transfer or Brady-compatible printer following the printer manufacturer’s media loading instructions. Select appropriate thermal transfer ribbon and print settings for polyester film to ensure optimal print contrast and durability. Apply labels to clean, dry surfaces, pressing firmly to ensure full contact and adhesion. For cable marking, wrap or position the printed label as required and smooth out any air pockets for best adhesion.

Usage recommendations

For best results, store unused rolls in a cool, dry place away from direct sunlight. When printing for autoclave or cryogenic applications, test an initial label on the target substrate and adjust ribbon type and print darkness to achieve legible, durable prints. Ensure surfaces are free from oils, dust and frost prior to application to maximize adhesive performance.